Which NFL team was the first to win 3 consecutive championships?
The Green Bay Packers
The franchise has experienced three major periods of continued success in their history. The first period of success came from 1929–1944, when the Packers were named NFL Champions six times. This period saw the Packers become the first dynasty of American football and the only NFL team to ever be named NFL Champions in three consecutive seasons (1929–1931).
This trivia came from www.pigskinacademy.com. Information came from Wikipedia.com